import base64
import urllib
import requests

class BaiduApi:
    def __init__(self):
        self.API_KEY = ""
        self.SECRET_KEY = ""

    def get_access_token(self):
        """
    使用 AK，SK 生成鉴权签名（Access Token）
    :return: access_token，或是None(如果错误)
    """
        url = "https://aip.baidubce.com/oauth/2.0/token"
        params = {"grant_type": "client_credentials", "client_id": self.API_KEY, "client_secret": self.SECRET_KEY}
        return str(requests.post(url, params=params).json().get("access_token"))

    # 身份证验证
    def idcard(self, picurl):
        url = "https://aip.baidubce.com/rest/2.0/ocr/v1/idcard?access_token=" + self.get_access_token()

        # image 可以通过 get_file_content_as_base64("C:\fakepath\1.png",True) 方法获取
        payload = 'id_card_side=front&url=%s&detect_ps=false&detect_risk=false&detect_quality=false&detect_photo=false&detect_card=false&detect_direction=false' % (
            picurl)
        headers = {
            'Content-Type': 'application/x-www-form-urlencoded',
            'Accept': 'application/json'
        }

        response = requests.request("POST", url, headers=headers, data=payload)
        print(response.text)
        return response.text

    # 文字识别
    def fontmessage(self, picurl):
        url = "https://aip.baidubce.com/rest/2.0/ocr/v1/accurate_basic?access_token=" + self.get_access_token()

        payload = 'url=%s&detect_direction=false&paragraph=false&probability=false' % (picurl)
        headers = {
            'Content-Type': 'application/x-www-form-urlencoded',
            'Accept': 'application/json'
        }
        response = requests.request("POST", url, headers=headers, data=payload)
        data = json.loads(response.text)
        name = data['words_result'][0]['words']
        code = data['words_result'][1]['words']
        return {"name": name, 'code': code}

baidu = BaiduApi()
